About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
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Symposium
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Composition–Processing–Microstructure-Property Relationships of Titanium Alloys
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Presentation Title |
Study of Microstructure of Titanium Alloys and Its Relation to Mechanical Properties of Alloys for Aerospace Industry |
Author(s) |
Borys Petrovich Sereda, Yaroslav Pylypchuk, Dmytro Kruhliak |
On-Site Speaker (Planned) |
Dmytro Kruhliak |
Abstract Scope |
Titanium alloys were processed using functionally active charges. The results of the study of heat resistance of protective coatings showed that the thickness of the oxidized layer is 10-20 microns. The best results of heat resistance showed titanium coatings alloyed with nickel. The greatest resistance to high-temperature oxidation is characterized by (α+β)-alloy. It is established that with the increase of processing temperature residual stresses increase (at T= 950º C σ =130 MPa, at T= 1050º C σ =170 MPa). The hardness of the surface layer was 750 NV, and the hardness of the inner layers of the VT-20 alloy was 1.8 GPa. Additional alloying with aluminum leads to the formation of a protective film of Al2O3, which prevents the diffusion activity of oxygen. |